1. This useful model refers to an aging industrial box used to make plastic materials, Its characteristic is that its wall closure or connection mechanism is a fixed column structure, which is composed of one side of common function (both ends of its largest wall) and one side of parent function (both ends of its smallest wall),The male side shows: two long, interconnected, interconnected saliva with a small square hole, wide, square, and between the long saliva and the long saliva, cut a piece in the form of a space, and cut a hole in the form of a C word. Provide a clamp for your respective anchor.Under the above saliva, the dock function for entering the female side also provides a lower flat surface rectangular floating object, which is the first contact point of the Council, which in turn guides its direction of motion (pivot) to make it stranded; the female side displays along its position. The side and position are the same as the saliva on the male side, the round and round without bottom. For the bottom cave, if there is a bottom, its hole can be used to receive the saliva on the male side, produce their respective animals, and form a single column.
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